Here are a few notes from my experience ->
I grew up in NI, and moved to England to go to Uni (as did many/most of the good students academically in my year). I studied and worked there for many years, then lived in the US for 5 years, and then back to a midlands (with kids). So in sense I (and later with family) were nomads. We had a good time everywhere we were, but were very conscious that we'd move on.
After our move back to midlands area we struggled to settle there for 2 years, even though we had good jobs, great place to live. That was the only time we had such an experience. and when jobs came up in Dublin are Ireland we moved there. Kids went to school, and all settled in no problem for many years. I think it was was because I was just so busy with work, and DH was starting a business, and with young kids, we just had no time to think!
Several years ago, for family reasons, we moved back to my home area in NI. It's a lovely scenic area, cost of living/housing much better than Dublin, much less "busy" in general. I continue to work for a company based in Dublin area, and in the office a few times per month.
Really had no problems to settle back in my home area. Logistically it was easier knowing the area, have extended family, and still a good few people I would have known from my school days.
So while it's all good here, I do dread the potential for a return to the time of the troubles here in NI overall. We never had any issues where I grew up, Unionist heartland area, not much diversity :) It's always at the back of my mind, and I hate to say it, but a number of our neighbours (and some extended family) could rightly be classified as sectarian bigots.
I don't have a great support network, but know the area, and love being here.